A cobpobation of mas



23, 192s. Rg y17,107

.L A. SPENCER SADIRON original Filed June. 29.11923 2 snt,.sht 1 WITNESSES: l l l -I I INVENTOR 5.@ y@ Y John Spencer W BY tween the inclined legs of the heating element andin a. convenient position to be connected respectively with the'lead 20 andthe lead 28. Furthermore, the thermostatic element when located in this position is controlled by a temperature which corresponds to the average temperature of the base as a Whole, rather than the temperature of some isolated part of the base, as the pointed end for example.

On the other hand, the location of the ther-- mostatic assembly in approximately the central portion of the iron causes the thermostatic control to cut oil' the heating current of any portion of the base, such as 'the pointed end', immediately upon reaching the predetermined upper limit of temperature.

In order to accommodate the projecting terminals 24 and 30 of the thermostatic assembly, the Weight Imember 40 may be recessed, as indicated at 60. An additional recess or opening may also be'provided inthe Weight member to accommodate the adjusting member 62. By forming and locating the thermostatic assembly in this manner, it Will 'be evident that' it may be embodied in a sadiron by merely providing recesses of the proper shape and dimension in the base and weight members, the thermostatic assembly as a Whole being held in place by the Weight member when the latter is clamped onto the base by the through-bolts 42.'

-From the foregoing it will be evident that the electrical resistance elements and the thermostat are clamped together by means including the stud bolts 42 with only a layer of mica therebetween.

While it is preferred to employ the specic construction and arrangement of parts shown and described it Will be understood that this construction and arrangement is not essential except so far as specified in the claims and may be changed or modified Without departing from the broader features of the invention.

The invention having been described, what is claimed is 1. A sadiron comprising a 'pointed base member, a heater assembly comprising substantially flat heater strips connected at one end in a substantially triangular formation and superimposed above the base member, a

substantially circular thermostatic assembly received in a recessed portion of the base member and spaced rearwardly from the pointed end of the base, a Weight member `superimposed upon the heater assembly and serving to maintain the thermostatic control Within the recess, and means for connecting the Weight member to the base.

2. A sadiron comprising a base member having a recess formed therein, a 'thermostatic assembly received Within the recess and `having -a disk of insulating material suping Withinthe recess in the direction of the under face of the sadiron base, and an upper base section for the iron'in the form of a Weightmember resting on the thermostatic base to retain it in position in the recess.

4. A sadiron comprisin a. substantially flat base having a recess ormed'therein at the central portion of the base, a thermostatic assembly received Within the recess, a Weight member superimposed above the base,`a heating element interposed between the Weight member and base, and through-bolts Vextending through the Weight member and into the base upon opposite sides of the recess in which the thermostatic assembly is received. 5, A sadiron including a base member having an annular recess formed therein surmounted by an enlarged recess forming a shoulder, a thermostatic member having a base resting in the enlarged recess on the shoulder and an operating-'portion projecting Within the recess in the direction of the under face of the sadironbase, and anv up er base section for the iron in the form o a Weight member resting on the thermostat base toY retain it in position in the recess, the thermostat member having projections extending thereabove and the Weight member having recesses receiving the projections in spaced relation thereto.

l6. A sadiron including a base having`v a shouldered recess formed therein, a thermostat member in the recess having a Vbase portion engaging the shoulder thereof, heater .members supported by the base, a Weight member surmounting4 the heater members and a thermostat member, a handle portion forv the iron, and fastening members passing through the handle, Weight and base portions for securing. the entire iron in assembled relation.

7. A device ofthe character described comprising an electrical resistance element, a thermostat for controlling currentsupplied to the element, insulation between the element and thermostat, and means for holding said parts together saidmeans being sym-4 metrically located with respect to said thermostat. l

8. A device of the character described comprising an electrical resist-ance element, a thermostat for controlling current supplied to the element, a layer of insulation between the element and thermostat, and means including a stud extending through the resistanceelement for clamping said parts together-'f'r'aiyd `means being symmetrically located with respect to said thermostat.

9. A separable heating lelement assembly comprising a resistance element adapted to heat up on 'the passage of a suitable current through it, a thermostat adapted to control the current passing through the resistance element, insulating Vmeans separating the thermostat and the resistance element, an means mechanically interconnecting the resistance unit, thermostat, and insulator an holding them as one unit, whereby said one unit may be inserted into or removed from a heating device in one operation.

10. A separable heating assembly com rising a resistance element mounted on a reijractory insulator, a thermostat adapted to control the passage of electricity through said resistance element, and means mechanically interconnectino mostat and ho ding them as one (unit,l where by said one unit may be inserted into or removed from a heating device in' one operation.

11. A unitary structure for an electrically heated device, comprising an electric heating unit and a thermostatically-controlled switch assembly directly secured thereto.

12. A unitary electric heating means temperature-controlling trically heatedl device, said temperature controlling means being secured to said heating means and removable therewith as a unit romsaid device.

In testimony whereof, I have hereunto subscribed my name this 15th day of February, 1926. v

and

JOHNv ALBY SPENCER.

means for an electhe resistance unit, and ther- 

